Inking apparatus for printing-presses.



No. 651853. Patented lune 5, 1900,

n. meuua. INKING APPARATUS FOR PRINTING PBESS ES.

(Application filed Sept. 80, 1897.)

(No Model.)

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M8 n E, N L R m m M r j r e R r. y m 5 UNITED STAT S: PATENT; OFFICE,

ROBERT MIEHLE, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE MIEI-ILE PRINT- ING PRESS AND MANUFACTURING COMPANY, OF SAME PLACE.

INKING APPARATUS FOR PRINTING-PBESSES.

SPECIFICATION forming part of Letters Patent No. 650,853, dated J uneb, 1900.

Application filed September 30, 1397. $e1-ia1No.653|602- (No mode.)

T at whom it may concern: I

Be it known that I, ROBERT MIEHLE, a citizen of the United States, residing in Chicago, in the county of Cook and State of Illinois, 5 have invented a new and useful Improvement in Inking Apparatus for Printing-Presses, of which the following is a specification.

This invention is an improvement in the ink-supplying a'pparat us for printing-presses, and is especially designed for use in presses employing reciprocating ink-distributing ta-. bles, a stationary ink-supply or fountain, and a Vibrating'ink-transfer roller or ductor to conveyink from the fountain-roller to the distributing-table.

The invention is designed to prevent disintegration of or other injury to the ductorroller by violent contact between-it and the fountain-roller or the distributing-table and does this by reason of the peculiar and novel construction and arrangement of parts, as hereinafter described. 7

In machines employinga reciprocating inking-table the ductor-roller is rotated first in one direction and then in the other by and during its contact with such table, and it leaves said table rotating in a direction contrary to'that in which it should be rotating when it next comes into contact therewith, and the present invention is designed to in: sure the slowing down or stoppage of the ductor-roller as it moves toward the fountainroller and to impart a rotary movement thereto in a reverse direction as it moves toward ,5 the distributing-table; and the present invention therefore resides in the novel means for accomplishing this object, as hereinafter described and claimed, and illustrated in the accompanying drawings, in which Figure 1 is a detail side elevation of a pressinking apparatus employing a reciprocating ink-distributing table. 'Fig. 2 is a detail top View thereof.

Referring to said drawings, B designates the feed-roller of an ink-fountain B, of ordinary construction, suitably mounted upon the frame of the press. 0 designates the reciprocating ink-table of such a press, and O O designate rollers for disseminating ink upon said table. All these parts, being well known in construction, arrangement, and operation, need no'further description herein.

A designates the ductor-roller, adapted to supply ink from the fountain-roller B to the distributing-table O. This ductor-roller is journaled in the ends of vibrating arms A, which are pivoted to the frame, as at a, and

the ductor may be vibrated laterally by means of arod a, pivotally connected to the arms A and operated, as usual, by any suitable means, (not shown,) so that at the proper time arms A are vibrated so as to move the ductor A alternately into contact with the roller B and into position to contact with the table 0. Onlyone arm A and rod a is shown; but it is to be understood that these may be duplicated, and an arm A is provided at each end of the ductor. One end of roller A or the stock of said roller is reduced in diameter, as shown at A just at the inside of the 'arm A, and this reduced surface or stock is adapted to traverse the frictional surface of a curved block D, fixed upon a supportingbracket D suitably attached to the main frame and so arranged as to hold the block D, intermediate thepivot of arm A and the ductor, in position to contact with and 'be traversed by the stock A of the ductor. This frictional surface is cuwed on an are having the pivot a as its center, and the ends thereof are rounded or curved inwardly, as at d,in order that the contact between the stock and said surface shall be somewhat gradually made in either direction as the ductor. is moved thereoverand such that the stock shall entirely clear the ends of said friction-surface prior to its contact with either the foun tain-roller or the distributing-surface;

As shown, the block D is provided with a frictional surface D, of leather, rawhide, or other suitable material, so that an efiective frictional contact will be made between said surface and stock of. the ductor. The block D should be adjustably mounted, so that it can be adjusted to make the proper frictional 5 contact between itssurface and the stock.

Operation When the ductor-roller is moved into position to contact with the reciprocating distributing-table C, as the latter moves outward to the right the ductor is rotated by we its contact with said table to the left. Then when the table moves inward to the left the ductors rotation is reversed, and it is turned rapidly to the right and continues turning to the right after the table 0 has passed from beneath it. Then the ductor is moved toward the fountain-roll B, and in so doing its reduced stock A comes in contact with the frictional surface D, and the roller is gradually slowed down by contact of its stock with the frictional surface, although the lateral movement of the ductor is such as would rotate it in the direction in which it is rotating when it leaves the table; but as it is moved past the frictional surface so much more slowly than its peripheral rotation it is slowed down and practically stopped before it leaves the lower end of said frictional surface, which it does just before or as it contacts with the fountain-roller O. The ductor is then moved up again and its stock comes into frictional contact with the frictional surface 0, and owing to the length of the frictional surface and the reduced diameter of the stock a positive rotary motion is gradually and certainly imparted to the ductor as it moves up into position to be contacted by the reciprocating ink-table, and when the ductor clears the upper end of block D it is rotating to the left in condition to properly contact with the inkbed on its movement to the right without slurring thereon.

Thus it will be seen that by this invention the alternate rotary movements imparted to the ductor-roller by the ink-distributing table is taken care of by the frictional surface which first slows down the ductor without any sudden stoppage thereof, so that it will not injure itself by moving improperly at the time of contact with the fountain-roll, and then the friction-surface imparts a reverse rotation to the ductor on its upward movement, so that it will be rotating in the-proper direction when it again contacts with the distributing-table. Thus the alternate rotary movements of the ductor imparted thereto by the reciprocating ink-table are prevented from injuriouslyaffecting the ductor, and the latter is prevented from coming into contact while moving rapidly with a stationary or oppositely-moving surface or from coming into contact while totally stopped with a rapidlymoving surface.

Having thus described my invention, what I therefore claim as new, and desire to secure by Letters Patent thereon, is-

1. In an inking apparatus for printingpresses, the combination of the fountainroller, a reciprocating ink-distrilmting table and distributingrolls coacting therewith; a 6 6 ductor orink-feeding roll, and means for mov ing said ductor alternately into contact with the inking-roll and into position to contact with the reciprocating ink-table, the reciprocating table imparting rotary movements to the ductor-roller in alternate directions during its contact therewith; with a frictional surface intermediate the ink-table and fountain past which the ductor is moved, said frictional surface being adapted to also reverse the rotary movement of the ductor by slowing down the rotary motion imparted to the ductor by the movement of the reciprocating ink-table prior to the contact of the ductor with the fountain-roll, and to impart a rotary movement to the ductor-roller in the reverse direction as it is moved back toward the inking-table, so that the surface of said ductor shall be rotating in the direction in which the reciprocating table is moving when the latter again contacts therewith.

2. In an inking apparatus for printingpresses, the combination of the fountainroller, a reciprocating ink-distributing table; a ductor or ink-feeding roll havingastock or shaft of small diameter at one end, and arranged to transfer ink from the fountain-roll to the reciprocating ink-table, and means for vihratin g said ductor-roller between the fountain and said table, the reciprocating table imparting rotary movements to the ductorroll in alternate directions during its contact therewith; with a block located between the d uctor-roll and the pivots of its supports and having a curved frictional surface arranged to contact with and be traversed by the stock of the ductor-roller as it is vibrated between the roll and the distributing-table, said stock entirely clearing the friction-surface prior'to its contact with either the fountain-roller or the distributing-surface; said frictional surface being adapted to gradually slow down the rotary motion imparted to the ductor by the movement of the reciprocating ink-table in one direction prior to the contact of the ductor with the fountain-roll, and to impart a reverse rotary movement to the ductor as it is moved back toward the distributing-table, whereby the surface of said ductor is caused to rotate in the direction in which the reciprocating table is moving when the latter again contacts therewith, all constructed and arranged to operate substantially as and for the purpose set forth.

ROBERT MIEHLE.

Vitnesses:

II. M. MUNDAY, EDW. S. EVARTS. 

